ABB RER620, Technical Manual

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Section 4
Protection functions
RER620 99
Technical Manual
Table 119: 50P-1/2 Monitored data
Table 120: 50P-3 Monitored data
4.1.1.11 Technical data
Table 121: 51P/50P Technical data
Name Type Values (Range) Unit Description
PICKUP_DUR FLOAT32 0.00...100.00 % Ratio of pickup time / trip time
50P-1/2 Enum 1=enabled
2=blocked
3=test
4=test/blocked
5=disabled
Status
Name Type Values (Range) Unit Description
PICKUP_DUR FLOAT32 0.00...100.00 % Ratio of pickup time / trip time
50P-3 Enum 1=enabled
2=blocked
3=test
4=test/blocked
5=disabled
Status
Operation
accuracy
Depending on the frequency of the current measured: f
n
±2Hz
51P ±1.5% of the set value or ±0.002 x I
n
50P-1/2
and
50P-3
±1.5% of set value or ±0.002 x I
n
(at currents in the range of 0.1…10 x I
n
)
±5.0% of the set value
(at currents in the range of 10…40 x I
n
)
Pickup time
12
1. Measurement mode = default (depends on stage), current before fault = 0.0 x I
n
, f
n
= 60 Hz, fault current in
one phase with nominal frequency injected from random phase angle, results based on statistical distribution
of 1000 measurements
2. Includes the delay of the signal output contact
Minimum Typical Maximum
50P-3:
I
Fault
= 2 x set
Pickup value
I
Fault
= 10 x set
Pickup
value
16 ms
11 ms
19 ms
12 ms
23 ms
14 ms
51P and 50P-1/2:
I
Fault
= 2 x set
Pickup
value
22 ms 24 ms 25 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 30 ms
Trip time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Trip time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3
3. Maximum Pickup value = 2.5 x I
n
, Pickup value multiples in range of 1.5 to 20
Suppression of harmonics RMS: No suppression
DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
P-to-P+backup: No suppression